Molding-machine



' L 'KNAPP. "mmnmemcHmE. IAPPILIICATIONI FILED my. 2; 1919.

'mm May 4,1920.

J KNAPP. MOLDING meme. APPLICATIQN ElLED M mi. 1919.

Patented May 4,1920.

3 SHEETS-SHEET 2.

J. KNAPP.

MOLDINGMACHINE. APPLlCATlON FII .ED APR.2, 1919.

Patented 'May4, 1920.

3 SHEETS-SHEET 3 06/7 /7 find 0 v 3mm:

3% gamj UNIT n sra'ras PATENT clam-E.-

JOHN KNAPP, 0F HOLLAND, MICHIGAN.

MoLnrNe- AoHi E.

Application filed April 2, 1919. Serial No. 286,859.

To all whom it may concern Be it known that 1, JOHN zen of the United States, residing at Holland. in the county of Ottawa and State of Michigan, have invented certain'new-and useful Improvements in Molding-Machines,

of which the following'is a specification.

vious Patent No. 1,278,6i9 dated July 23rd,

1918, and embodies generally an improved or rearrangement of the manually operable mechanism for independently or collectively moving the supporting table and the flask supporting means.

' It is an additional and equally important .object of this invention to provide-an apparatus of the above mentioned character wherein the operating handleof the table moving means is fitted with a weight which actsto automatically raise the table when the flask supporting means is in a raised position, the flask being so associated with the table, that when the moving means is operated the table will be moved to a lowered position and will remain in such position when the flask is being filled with molding material.

' The invention also. embraces the provision of a molding apparatus ofthe above mentioned charactei wherein plates are adjust- .ably mounted within thesupporting casing or sleeve so as to be moved laterally inwardly to coact with the adjacent face of the supporting stem of the table and as a result compensate for wear on these parts which is incident to a continuous use thereof, in 0on I sequence obviating any play between these parts which would have a tendency to 1nterfere with the production ofan effective mold.

It isanother ob ect of this invention to provide a molding apparatus of the above mentioned character wherein auxiliary'supporting means is employed for removably retaining the secondary or swinging frame which serves as a supporting means for the flask positively spaced above the tableat Specification of LetterslPatent.

Kxarr, a citi- Patented May 4, 1920.

the time the finished mold is being removed from the flask, additional and adjustable supporting means being incidentally employed for supporting the pattern slightly spaced from the cover plate-which rests on the table, allowing a slight drop of the mold from the pattern and in j fconsequence facilitating the subsequent tern. j v The invention has for anotherobject to provide a molding apparatus of the abote mentioned character wherein cooperative removal of the pat-.

catch means is mounted on the platform'of the frame or carriage and on the handlewhich moves the table for releasably retaining the handle andconsequently the table in variouspositions of adjustment. I

It 1s another object of this invention to provide a molding apparatus-of the above mentioned character wherein cooperative,

means is mounted on the flask and. on the secondary swinging frame which supports the flask for'releasably holding the flask 'in aninverted position and the catches in a raised position at the time the flaskis raised and while one of the molds is being removed from the pattern.

More specific objects of this invention consist in the provision of handles on the pattern to facilitate the handling thereof; to provide a movable catch bar on one of the bearing standards for removable association with-the operating handle of the moving means for tl16'ii flask supporting mounting the carriage.

means, and to provide inlgproved means for Among the other aims and ,obje ctslofj invention may be recited the provision of an apparatusof the above mentioned character,

which is comparatively simple in construetion, durable and one which will be yer-y;

eflicient in use and operation.

. The improvements in the detans 'an'cbae' rangement of parts will be apparent hem";

an inspection of the accompanying draw ings, in connection with the'specifi'c tle'scrip' tion hereinafter contained, and wherei'n'the;

preferred embodiment of, the invention; is

disclosed for the purpose of impart nga full understanding of the invention.

The invention is clearly illustrated-in the accompanying drawings, in which Figure 1 is aside elevation'of the improvedlmoldingapparatus,

Figi fi is a top plan View thereof,

Time

Fig. 3 is a transverse sectional view through the apparatus showing the position -=tssumed by the flask when the mold is being removed from the pattern.

Iig. -l is a fragmentarv elevatimial detail of the means for releasably holding the flask- "IglRefe -ring now. more particularly, to the accompanying drawings there is provided afcarriage designated in its entirety by the numeral 1 consisting of a frame 2 the forvard and the rear ends of which are jour- 'naled axles 3, the forward axle being fitted with spaced supporting wheels 1 near its respective ends while the rear axle is fitted with a single supporting wheel or roller 5 medially of its ends. the said wheels 1 and 5 operating on suitable tracks so that the molding apparatus will be transported from place to place during the molding process.

Spaced standards 6 rise from theframe 2 near the forward extremity and are connected by a cross bar 7 which is provided with a central square opening while secured to the cross bar near the respective ends are plates 9 formed with transverse slots 10 in which are pivotally mounted the lower ends of supporting pins 11. the upper ends of which are adjustably fitted with vertically movable screws 12 for a purpose which will presently appear. A table 13 is arranged above the cross bar theopposite side edges being provided with spaced slots 14 for disposition about the guide and supporting pins 11 while depending centrally from the under surface of the table is a squared shank or stem 15 which is arranged through the opening 8 in the cross bar and accommodated within the squared sleeve 16 carried with and depending from the cross bar and alining with the opening The opposite sides of the casing at the lower edge are provided with opposed vertical slots 17 while arranged transversely through the lower projecting portion of the shank 15 an axle 18 upon which are rotatably mounted rollers 19 and with which coactcams 20 which project in turn from 'a transverse shaft 21 rockably mounted in the frame 2. An operating handle 23 is con nected to one end of-the shaft. the upper portion being offset as at 23 and is fitted at its outer end with a weight 21L which normally acts to cause the cam 21 to bear screws 26 and by this peculiar arrangement of parts itziS apparent that play between the parts will be obviated. I

As intimated, an improved flask generally designated" by the numeral :27 has been eni- 'ployed and in the present instance consists of a substantially square receptacle 2% having inclined walls from the opposite sides of which project trunnions .29. The upper edges of the walls are provided with outwardly directed horizontal flanges 3 to which are slidably connected retainers 31 the outer edges of which arein turn formed with finger pieces 32 to facilitate sliding thereof. The pattern -33 may be of any conventional shape and consists of a frame 31 to which is connected a longitudinally curved bottom piece 35 while between the frame and the edges of the bottom are the side pieces 36. vHandles 37 are connected to the side edges of the flanged portions of the frame and these flanged portions are,

also provided with openings 38 designed for engagement with the vertically arranged guide pins 39 which project, from the side flanges 30 of the receptacle. A cover plate i is designed for association with the upper edge of the frame of the pattern while the parts are held together by hook-like catches it) pivoted as at 11 to the front and rear sides of the receptacle.

'As intimated. improved means has been provided for supporting and moving the flask and in reducing this feature of the iiivention to practice. opposed vertical standards 12 rise from the frame 2 near the rear end thereof being braced by braces 13 while bearings ii are adjustablyconnected for vertical movement at the upper ends of the standards and ope ably receive the ends of a transverse shaft -15 to which is connected the secondary frame 16 for the flask. This frame 16 consists of side bars l? which are connected near their rear ends to the shaft 45 and have their rear ends connected by a cross bar 48 for a purpose which will presently appear while the forward portions are offset as at -19 and the outer terminals of the offset portions of the side bars are provided with bearings 50 in which are removably journaled the trunnions 29 of the flask. A segmental gear 51 has its inner end connected to. the shaft 45 and is also connected with the cross bar 47 being provided with internal teeth 52 near its outer edge with which meshes a pinion 53 carried by a shaft 5-1 in turn journaled in spaced bearing brackets 55 carried by one of the braces 13. A gear 56 is also mounted on the shaft 51 and is meshed by a pinion 57 carried by the inner end of a stub-shaft 58 while journaled in the adjacent standard 12 and the,.outer end of this stub-shaft 58 is 'fittedlwith a crank handle 59 which upon rotation is dethe levation of the molding flask.

I order to releasably hold the recepta le 2? f the flask in a raised and inverted positi 1 at the time the mold is being removed f1 1n the pattern a catch bar 63 is pivoted t) the outer end of an arm 61 which de ends at right angles from one of the side ars 47 of the frame 46 near the offset portion thereof and the outer end of the latch .bar is designed to be arranged between spaced ears 65 which project laterally from 31c front face of the receptacle :28 near e lower edge thereof. A set-screw 66 is mounted in one of'the ears and is designed toclampthe bar 63. thereto. In addition the. ba1163 carries a laterally disposed keeper 67 designed to releasably hold the adjacent hook-like catch in an inactive position. the particular arrangement of parts being-shown in Fig. l. I

In order to retain the flask 2T and-table 13 relatively stationary at the time it is desired to remove the mold from the receptacle 2S and subsequent to the removal of the pattern. struts 69s are pivoted to the outer ends of the cross bar 7 and are designed to be swung upwardly so as to be engaged by the under surfaces of the bearings 50 preventing a downward movement of the flask beyond the point of. engagement. A shouldered element 70 is arranged to one side of the frame 2 in the rear of the shaft 2"" which acts as a retainer being preferably right angular in cross section forming a lower shoulder T1 and an upper shou der 72, whilethe upper surface'of the element is also designed to act as a stop for a shoulder 73.. the. shoulders T1. T2 and 73 being designed to' be engaged at times by a removable pin 74 which is' arranged transversely through the inner portion of the handle 23. the particular enagement and advantages of this construciotnb ng hereinafter set forth.

At imes, during the molding operation, it

is found necessary to prevent an accidental rotation of the crank handle and with this end in view a keeper or latch bar T5 pivoted to one of the bearings 11.

During the formation of the mold in the pattern and in the receptacle. a pin or pluck T6 is adapted to be arranged centrally and vertically in the pattern and subsequently inthe flask leaving an opening through the mold through which molten metal is adapted to be subsequently poured. as is apparent.

The mode of operation of the present invention may be reviewed as follows Assuming that the parts have been assembled in the manner described and as shown in the drawings. the hook catches 10 are disengaged from the cover plate -10 whereupon sand is packed or rammed into the pattern 33. and subsequent to the packing of the sand the cover is positioned on the pat; tern and held by the catches 10. The c ank handle 59 is now engaged and partially ro tated so as to raise the secondary frame 16 as well as the flask inasmuch as the mold in thepattern is heavier than the receptacle 23, the flask will automatically assume an i11- vertedposition whereupon the handle 59 is engaged so as to bring the flask into e11- gagement with the sup iorting table 13. The pluck or pin 76' is now adapted to be inserted in the opening in the curved bottom of the pattern whereupon the receptacle is filled with sand and rammed: subsequently to this latter action the 'pin 76 is removed leaving the opening therein. The struts 68 are now swung upwardlyso that the bearings 50 will rest on the upper edges thereof and during this action the pivoted'bar 63 will be engaged between the ears 65 and held in disengagement by the set-screw 66, the keeper bar 67 being arranged to engage thebill of the adjacent hook-like catch 40, which is previously released, so as to hold this catch in a position sp that it will not interfere with the proper operation of the parts. In this connection it is to be particularly observed that the flask is now in a horizontal position. The pin 74in the handle 23 is now released from its engagement with the upper shoulder 72 so that the handle,

may be raised and the table 13 lowered carry ing with it the cover plate 40 and the pattern 33. In this connection it is to be particularly observed that the flanged portion of the frame 31 of the pattern engages the.

adjustable screws 12 in the guide pins 11 so as to be held slightly spaced from the cover plate 40' which is on the table 13, this action causing the dislodgment .of the mold from the pattern so that it will rest on the plate 40. Of course the mold does not become disengaged of itself, but a slight tapping of the pattern Will-cause such disengagement.

The handle 59 is now engaged and rotated to raise the flask into a relativelyhigh: posiering movement of the flask. the handles 37 on the flanged portion of the frame of the pattern 33 are enga'gedso that the pattern may be lifted from thepins 11.. T he bar or keeper is now released and the handle en gaged to move the flask downwardly until the .lwarings rest upon the upper ends of the, struts (in, being thereby prevented from having further downward movement. The handle 23 is now swung downwardly to raise the table 13v whereupon the pin Hf is engaged beneath the lowermost shoulder 71 so that regardless of any weight disposed on the table the same will be held in a raised position. As a result of this action. the mold in the flask and the mold '011 the table will be placed close together. The finger pieces 32- are now engaged to slide the retainers31 from engagement with themold and the receptacle Q8. The pin M is now removed from the shoulder 71 and the hand-le23 moved upwardly by imparting a slight upward pressure on one of the arms of the secondary f'ame. In other words, the weight of the mold on the table overcomes the action of the weight 21h in the handle23 lowering the table and raising the handle automatically while simultaneou'sly the action of the spring (30 and weight on the empty receptacle automatically .raises the flask or rather the receptacle thereof subsequent to the slight initial movement of the frame. The plate 4:0 which supports the molds is now removed from the table and after this action the bar 63 is disengaged from the ear 65 allowing therecepta'cle to right itself. hen the molds are removed from the table the weight 21f acts to automatically raise the table and by replacing the pattern on the receptacle the. molding operation may be repeated, as is apparent.

It is believed in view of the foregoing description that a further detailed description of the operation of the invention is entirely unnecessary. Likewise, it is believed that the advantages of the invention will be readily apparent. i

As many changes could be made in the above construction and as many apparently widely different embodiments of this invention could be made without departing from the scope'thereof, it is intended that all matter contained in the above description and, shown in the accompanying drawings, shall be interpreted as illustrative and not in a limiting sense. It is also to be understood th atthe language used in the follow,- ing claims is intended to cover all of the generic and specific features of the inventionh'erein described and all statements of the scope 'of ihe invention, which as a mattion.

ter of language,'might be said to fall there between.

ner faces of certain of the walls of the sleeve for coacting with the shank.

2. In molding appa 'atus, a suppoi-tlng frame, spaced standards thereon. a cross bar connecting the standards, a squared sleeve depending from the cross bar, a table disposed oif the cross bar, a shank depending froni the table and vertically slidable through the sleeve, means'for raising'and lowering the table, wear plates arranged ad jacent the'inner surfaces of ceQtain of the walls of the sleeve for coacting with the shank, and means for adjusting the plates relative to the shank.

'3. In molding apparatus. a supporting frame. standards on said frame, a cross bar connecting the standards, a sleeve depending from the cross bar. a table disposed on .the cross bar. a shank depending from the table and arranged through the sleeve; a shaft through the shank. rollers on the ends of the shaft. a transverse shaft in the frame, roller engaging cams projecting from the shaft. an operating handle connected to the shaft. and a weight connected to'the outer end of the handle and acting to normally hold the table in a raised position.

t. In molding apparatus, a supporting frame. standards on said frame, a cross bar connecting the standards. a sleevedepend ing from the cross bar. a table disposed on the cross bar. a shank dependingfrom the table and arranged through the sleeve, a shaft, arranged through the shank. rollers on the shaft. a transverse shaft rockably mounted in the frame. roller engaging cams projecting from the shaft. an operating han dle connected to the shaft. a weight connected to the outer end of the handle designed to hold the table ina raised position. a flask for association with thetahle. means on the frame for pivotally supporting and moving the flask vertically. and cooperative means on the handle and onthe frame for releasably holding the table in various positions of adjustment regardless of the position of the flask.

In molding apparatus. a flask. means for pivotally suppo flask vertically. sp bar pivotally connei """ng and moving said supporting means is in a raised position.

6. In molding apparatus, a supporting frame, a flask, means for pivotally supporting-and moving said fla'sk vertically, means for operating said flask supporting means, means for releasably holding said operating Ymeans against movement when the flask is raised, cooperative means on said flask supporting means and on the flask for releasably holding the flask inverted when the flask supporting means is held in a raised position.

7. In..molding apparatus a supporting frame, spaced standards thereon, a cross bar connecting said-standards, a table, a shank depending ffom the table and slidably arranged through the cross bar, a rockably mounted transverse shaft in the frame, an

operable connection between the shaft and the shank and whilethe shank is rocked the table will be raised or lowered, a weighted handle connected to the shaft designed to normally hold the table in a'raised position,

a flask, a secondary frame mounted on the 7 main frame and designed for vertical swinging movement and for pivotally supporting the flask, struts pivoted to the cross bar designed to be swung upwardly at times to limit the downward movement of the secondary frame, and cooperative means on the frame and on the handle for releasably holding the handle and consequently the table, against movement and in the proper position to receive the mold from the flask at the time the secondary frame is supported by the struts.

' In testimony whereof I aflix my signature hereto JOHN KNAPP. 

